Spore [unofficial] Previews - Wii

Game Description:From the very tiniest forms of life to the intergalactic level of existence, you are in control of life itself in this simulation game by Will Wright. Beginning in the primordial ooze, players create a character from DNA that will grow, survive, and mate as it evolves from a single-celled organism to a fully-formed member of an establishing species. As more and more creatures inhabit the world, and as evolution forms the future, your species will join herds, clans, even civilizations. The more advanced the creatures of the planet grow, the more complex the strife of survival becomes.
NOTE: This game has been unofficially confirmed as a project planned (or at least heavily, heavily, heavily considered across multiple platforms -- once the PC version is in full form, designer Will Wright will be looking into ways to bring the creation to other systems), but the publisher has not announced the game or committed to platforms. It may or may not be released on this system. Please check back for official details.